International Journal of Automation and Safety
Volume 2, Numéro 1, Pages 33-39
2024-06-30

Interaction Analysis And Decoupling Of Axial-torsional Vibrations In Rotary Drilling Systems



Authors : Meddah Sabrina . Tadjer Sid Ahmed . Kidouche Madjid . Doghmane Mohamed Zinelabidine . Idir Abdelhakim .

Abstract

This research aims to investigate the interaction analysis and decoupling of axial-torsional vibrations in rotary drilling systems. The primary focus lies in proposing effective compensators for the decoupling process, allowing the extension of the proposed methodology from single-input single-output (SISO) systems to multi-input multi-output (MIMO) systems. Specifically, the objective is to address the strongly interactive terms between the inputs and outputs of the rotary drilling systems. By achieving this, the interconnected multi-loop components can be treated as a series of SISO subsystems, reflecting the comprehensive dynamics of the original system. The study carefully examines two distinct multivariable systems: a theoretical two-input two-output (TITO) system and an actual rotary drilling system. The results demonstrate the efficiency of the proposed approach, emphasizing its superiority over conventional methods. Notably, the proposed methodology effectively reduces dynamic error, settling time, and rise time, highlighting its potential for enhancing the overall performance and robustness of rotary drilling systems.

Keywords

Axial-Torsional Vibrations ; Rotary Drilling Systems ; Interaction Analysis, ; Decoupling ; Multi-Input MultiOutput (MIMO) Systems ; SISO Subsystems

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